. Fresh-water biology. Freshwater biology. 94 (95) Chlorophyl always present Heleopera picta Leidy 1874. The shell is very regular in outline, of a yellowish tint, usually with little foreign material attached. The presence of chlorophyl seems to be necessary to the life of the animal. Pseudopodia numerous. Found in sphagnous swampa. Length 100 to no /x. Fig. 318. Heleopera picta. X 150. (After Leidy,) 95 (94) Wine-red in color Heleopera rosea Penard 1890. This species may be known by its color, the tint being of variable depths. Sand grains and other foreign elements cover the fundus of the s
. Fresh-water biology. Freshwater biology. 94 (95) Chlorophyl always present Heleopera picta Leidy 1874. The shell is very regular in outline, of a yellowish tint, usually with little foreign material attached. The presence of chlorophyl seems to be necessary to the life of the animal. Pseudopodia numerous. Found in sphagnous swampa. Length 100 to no /x. Fig. 318. Heleopera picta. X 150. (After Leidy,) 95 (94) Wine-red in color Heleopera rosea Penard 1890. This species may be known by its color, the tint being of variable depths. Sand grains and other foreign elements cover the fundus of the shell. A thin, yellowish Up borders the aperture. Found among mosses in swamps. Length 90 to 100 it. Fig. 319. Heleopera rosea. X 150. (After Penard.) 96 (23) Pseudopodia sometimes thick, sometimes linear 97 97 (100) Shell chitinous, densely covered with sand grains, diatom shells, and other foreign elements. . Phryganella Penard . 98 98 (99) Large size; foreign elements large, rough. Phryganella nidulus Penard 1902. The shell is hemispherical and usually of rough contour. Aperture large. Pseudopodia slender but often accompanied by broad lobes of protoplasm. Found in the ooze of pond( and lakes. Large forms are 200 /< in diameter. Fig. 330. Fhryganella nidulus. X 90. (After Fenud.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
